Elastomeric Roof Coating, Blue to White, 1-GallonKool seal, gallon, blue to white elastomeric roof coating, color changing acrylic finish coat that provides a highly reflective finish to lower interior temperatures & reduce energy costs, formulated with snow roof technology for easy coverage, will transition to bright white when drying, usually within 24 hours, transition time will depend on environmental conditions & amount of sunlight, excellent waterproofing capabilities.